Whole House UV Water Filter System 12 GPM – 55W Stainless Steel UV Light with Flow Switch Ballast – LED Indicator & Alarm – Well & City Water UV Purifier – Bluonics

excellent service great product

great to do business with the best product and fast fast delivery will order again soon

Flow sensor switch is confusin

I can't figure out how to use the switch, as one end appears to be a hose thread.

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